Patents by Inventor Masaaki Hirakawa
Masaaki Hirakawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240110081Abstract: A temporary substrate adhesive according to an embodiment includes a silane coupling agent and a photobase generator, but does not include a resin.Type: ApplicationFiled: November 29, 2023Publication date: April 4, 2024Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Masaaki HIRAKAWA, Kazushi TATEYAMA
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Publication number: 20240069671Abstract: In general, in one aspect, one or more embodiments relate to an input device that includes a proximity sensing panel including sensor electrodes, and a proximity sensing circuit. The proximity sensing circuit configured to receive an indication of a transition from a first image refresh rate to a second image refresh rate, wherein the first image refresh rate is greater than a beacon signal rate and the second image refresh rate is equal to or lower than the beacon signal rate. The proximity sensing panel is also configured to align transmitting a beacon signal on the proximity sensing panel to a non-refresh period corresponding to the second refresh rate.Type: ApplicationFiled: November 6, 2023Publication date: February 29, 2024Inventors: Masaaki Shiomura, Hirokazu Hatayama, Makoto Takeuchi, Takayuki Noto, Nobukazu Tanaka, Daisuke Ito, Tomohiro Hirakawa
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Publication number: 20230099232Abstract: A temporary substrate adhesive according to an embodiment includes a silane coupling agent and a photobase generator, but does not include a resin.Type: ApplicationFiled: March 14, 2022Publication date: March 30, 2023Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Masaaki HIRAKAWA, Kazushi TATEYAMA
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Patent number: 11254870Abstract: According to one embodiment, an etching solution is provided. The etching solution is used for etching of silicon nitride. The etching solution includes: phosphoric acid; tetrafluoroboric acid; a silicon compound; water; and at least one of sulfuric acid and an ionic liquid.Type: GrantFiled: February 7, 2020Date of Patent: February 22, 2022Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Masaaki Hirakawa, Ikuo Uematsu, Takahiro Kanai
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Patent number: 10957553Abstract: According to one embodiment, an etching solution used for etching of silicon nitride is provided. The etching solution includes phosphoric acid, an acid, silicic acid compound, and water. The phosphoric acid has a first acid dissociation exponent pKa1. The acid has an acid dissociation exponent smaller than the first acid dissociation exponent pKa1. A mass ratio M1/M2 of mass M1 of the phosphoric acid to mass M2 of the acid having the acid dissociation exponent smaller than the first acid dissociation exponent pKa1 is within a range of 0.82 or more and 725 or less.Type: GrantFiled: March 6, 2019Date of Patent: March 23, 2021Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yukako Murakami, Masaaki Hirakawa, Ikuo Uematsu
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Publication number: 20200308485Abstract: According to one embodiment, an etching solution is provided. The etching solution is used for etching of silicon nitride. The etching solution includes: phosphoric acid; tetrafluoroboric acid; a silicon compound; water; and at least one of sulfuric acid and an ionic liquid.Type: ApplicationFiled: February 7, 2020Publication date: October 1, 2020Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Masaaki HIRAKAWA, lkuo UEMATSU, Takahiro KANAI
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Publication number: 20190198344Abstract: According to one embodiment, an etching solution used for etching of silicon nitride is provided. The etching solution includes phosphoric acid, an acid, silicic acid compound, and water. The phosphoric acid has a first acid dissociation exponent pKa1. The acid has an acid dissociation exponent smaller than the first acid dissociation exponent pKa1. A mass ratio M1/M2 of mass M1 of the phosphoric acid to mass M2 of the acid having the acid dissociation exponent smaller than the first acid dissociation exponent pKa1 is within a range of 0.82 or more and 725 or less.Type: ApplicationFiled: March 6, 2019Publication date: June 27, 2019Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yukako MURAKAMI, Masaaki Hirakawa, Ikio Uematsu
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Patent number: 10192733Abstract: A method of manufacturing a semiconductor device including attaching, by a liquid treatment, a first liquid to a surface of a semiconductor substrate having a fine pattern formed therein; substituting the first liquid attached to the surface of the semiconductor substrate with a solution, the solution comprising a sublimate dissolved in a second liquid; vaporizing the second liquid and precipitating the sublimate to the surface of the semiconductor substrate to forma solid precipitate comprising the sublimate; and removing the precipitate by sublimation. For example, the sublimate may be a material having at least two carboxyl groups bonded to cyclohexane or a material formed of two carboxyl groups bonded to benzene with the bonding sites of the two carboxyl groups being adjacent to one another.Type: GrantFiled: February 23, 2017Date of Patent: January 29, 2019Assignee: TOSHIBA MEMORY CORPORATIONInventors: Junichi Igarashi, Katsuhiro Sato, Masaaki Hirakawa
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Patent number: 10147619Abstract: A substrate treatment apparatus according to an embodiment includes a treatment part, a cyclic path, a heater, and a first injector. The treatment part is supplied with an etchant containing phosphoric acid and a silica deposition suppressor, and brings a substrate having a silicon nitride film on a surface thereof into contact with the etchant to remove the silicon nitride film from the substrate. The cyclic path circulates the etchant in the treatment part. The heater heats the etchant. The first injector is provided on the cyclic path, and injects the silica deposition suppressor into the etchant.Type: GrantFiled: August 23, 2016Date of Patent: December 4, 2018Assignee: TOSHIBA MEMORY CORPORATIONInventors: Katsuhiro Sato, Kaori Deura, Yoshinori Kitamura, Takahiro Terada, Yoshihiro Ogawa, Yuji Hashimoto, Masaaki Hirakawa, Yukako Murakami, Hideaki Hirabayashi
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Patent number: 9718710Abstract: According to one embodiment, a treatment apparatus includes a dialysis unit, a treatment unit and a recovery unit. The dialysis unit is configured to dialyze a solution including a phosphoric acid, a silicon compound, and water. The treatment unit is configured to perform treatment of an object to be treated using a dialyzed solution. The recovery unit is configured to recover a solution used in the treatment of the object to be treated and supply to the dialysis unit. The dialysis unit includes a transmission part which allows anions to be transmitted. The recovery unit supplies the solution used in the treatment of the object to be treated, to a region in the dialysis unit. The region is divided by the transmission part.Type: GrantFiled: July 30, 2015Date of Patent: August 1, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Masaaki Hirakawa, Emi Matsui
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Publication number: 20170162377Abstract: A method of manufacturing a semiconductor device including attaching, by a liquid treatment, a first liquid to a surface of a semiconductor substrate having a fine pattern formed therein; substituting the first liquid attached to the surface of the semiconductor substrate with a solution, the solution comprising a sublimate dissolved in a second liquid; vaporizing the second liquid and precipitating the sublimate to the surface of the semiconductor substrate to forma solid precipitate comprising the sublimate; and removing the precipitate by sublimation. For example, the sublimate may be a material having at least two carboxyl groups bonded to cyclohexane or a material formed of two carboxyl groups bonded to benzene with the bonding sites of the two carboxyl groups being adjacent to one another.Type: ApplicationFiled: February 23, 2017Publication date: June 8, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Junichi IGARASHI, Katsuhiro SATO, Masaaki HIRAKAWA
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Patent number: 9620353Abstract: A method of manufacturing a semiconductor device including attaching, by a liquid treatment, a first liquid to a surface of a semiconductor substrate having a fine pattern formed therein; substituting the first liquid attached to the surface of the semiconductor substrate with a solution, the solution comprising a sublimate dissolved in a second liquid; vaporizing the second liquid and precipitating the sublimate to the surface of the semiconductor substrate to form a solid precipitate comprising the sublimate; and removing the precipitate by sublimation. For example, the sublimate may be a material having at least two carboxyl groups bonded to cyclohexane or a material formed of two carboxyl groups bonded to benzene with the bonding sites of the two carboxyl groups being adjacent to one another.Type: GrantFiled: November 26, 2014Date of Patent: April 11, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Junichi Igarashi, Katsuhiro Sato, Masaaki Hirakawa
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Publication number: 20170062231Abstract: A substrate treatment apparatus according to an embodiment includes a treatment part, a cyclic path, a heater, and a first injector. The treatment part is supplied with an etchant containing phosphoric acid and a silica deposition suppressor, and brings a substrate having a silicon nitride film on a surface thereof into contact with the etchant to remove the silicon nitride film from the substrate. The cyclic path circulates the etchant in the treatment part. The heater heats the etchant. The first injector is provided on the cyclic path, and injects the silica deposition suppressor into the etchant.Type: ApplicationFiled: August 23, 2016Publication date: March 2, 2017Applicant: Kabushiki Kaisha ToshibaInventors: Katsuhiro SATO, Kaori DEURA, Yoshinori KITAMURA, Takahiro TERADA, Yoshihiro OGAWA, Yuji HASHIMOTO, Masaaki HIRAKAWA, Yukako MURAKAMI, Hideaki HIRABAYASHI
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Publication number: 20160075570Abstract: According to one embodiment, a treatment apparatus includes a dialysis unit, a treatment unit and a recovery unit. The dialysis unit is configured to dialyze a solution including a phosphoric acid, a silicon compound, and water. The treatment unit is configured to perform treatment of an object to be treated using a dialyzed solution. The recovery unit is configured to recover a solution used in the treatment of the object to be treated and supply to the dialysis unit. The dialysis unit includes a transmission part which allows anions to be transmitted. The recovery unit supplies the solution used in the treatment of the object to be treated, to a region in the dialysis unit. The region is divided by the transmission part.Type: ApplicationFiled: July 30, 2015Publication date: March 17, 2016Applicant: Kabushiki Kaisha ToshibaInventors: Masaaki HIRAKAWA, Emi Matsui
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Patent number: 9274104Abstract: According to one embodiment, a measuring system using an optical waveguide is provided. The measuring system has an optical waveguide, magnetic fine particles, a magnetic field applying unit, a light source and a light receiving element. The optical waveguide has a sensing area to which first substances having a property of specifically bonding to subject substances to be measured are fixed. Second substances having a property of specifically bonding to the subject substances are fixed to the magnetic fine particle. The magnetic field applying unit generates a magnetic field for moving the magnetic fine particles. The light source inputs a light into the optical waveguide. The light receiving element receives the light output from the optical waveguide.Type: GrantFiled: March 30, 2012Date of Patent: March 1, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Ichiro Tono, Shingo Kasai, Takaaki Wada, Isao Nawata, Masaaki Hirakawa, Tomohiro Takase, Kayoko Oomiya, Takeshi Yamauchi, Tadahiro Nakayama, Isamu Nitta
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Publication number: 20150155159Abstract: A method of manufacturing a semiconductor device including attaching, by a liquid treatment, a first liquid to a surface of a semiconductor substrate having a fine pattern formed therein; substituting the first liquid attached to the surface of the semiconductor substrate with a solution, the solution comprising a sublimate dissolved in a second liquid; vaporizing the second liquid and precipitating the sublimate to the surface of the semiconductor substrate to form a solid precipitate comprising the sublimate; and removing the precipitate by sublimation. For example, the sublimate may be a material having at least two carboxyl groups bonded to cyclohexane or a material formed of two carboxyl groups bonded to benzene with the bonding sites of the two carboxyl groups being adjacent to one another.Type: ApplicationFiled: November 26, 2014Publication date: June 4, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Junichi IGARASHI, Katsuhiro SATO, Masaaki HIRAKAWA
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Publication number: 20140076355Abstract: According to one embodiment, a treatment apparatus includes an electrolysis unit, an alkali addition unit, and a treatment unit. The electrolysis unit includes an anode electrode and a cathode electrode. The electrolysis unit is configured to electrolyze a solution containing an alkali containing no metal, hydrochloric acid, and water. The alkali addition unit is configured to further add the alkali containing no metal to a solution that has undergone the electrolysis. The treatment unit is configured to perform treatment of an object to be treated using a solution that has undergone the electrolysis and in which the alkali containing no metal is further added.Type: ApplicationFiled: August 16, 2013Publication date: March 20, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Hideaki HIRABAYASHI, Yuji NAGASHIMA, Masaaki HIRAKAWA
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Publication number: 20130316386Abstract: According to one embodiment, a test element includes a base, a pair of optical element units, an optical waveguide unit, a detection unit and a holding unit. The base has transparency. The pair of optical element units are arranged away from each other on a major surface of the base. The optical waveguide unit is provided on the major surface of the base. The detection unit is provided on a major surface of the optical waveguide unit of between the optical element units. The major surface of the optical waveguide unit is an opposite side which touches the base. The holding unit is in a frame shape, and one end of the holding unit being is provided to protrude from a major surface of the detection unit. The detection unit includes a color former and a film-formed body holding the color former.Type: ApplicationFiled: August 1, 2013Publication date: November 28, 2013Applicant: Kabushiki Kaisha ToshibaInventors: Ichiro Tono, Takaaki Wada, Kayoko Oomiya, Shingo Kasai, Masaaki Hirakawa
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Patent number: 8372630Abstract: An optical glucose sensor chip includes a substrate, a pair of optical elements formed on a surface of the substrate for introducing light into the substrate and for emitting the light from the substrate, and a glucose sensing membrane formed on the surface of the substrate at a position between the optical elements. The sensing membrane includes a color reagent substrate, a first enzyme which oxidizes or reduces glucose, a second enzyme that generates a material which makes the color reagent substrate exhibit color by a reaction with a product obtained by oxidation or reduction of glucose, a nonionic cellulose derivative, and an ionic polymer into which a buffer is incorporated. At least one of the first and second enzymes is coated with the ionic polymer, and the color reagent substrate. The first and second enzymes, the buffer and the ionic polymer are supported by the nonionic cellulose derivative.Type: GrantFiled: April 30, 2010Date of Patent: February 12, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Ikuo Uematsu, Masaaki Hirakawa, Kayoko Oomiya
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Publication number: 20120252111Abstract: According to one embodiment, a measuring system using an optical waveguide is provided. The measuring system has an optical waveguide, magnetic fine particles, a magnetic field applying unit, a light source and a light receiving element. The optical waveguide has a sensing area to which first substances having a property of specifically bonding to subject substances to be measured are fixed. Second substances having a property of specifically bonding to the subject substances are fixed to the magnetic fine particle. The magnetic field applying unit generates a magnetic field for moving the magnetic fine particles. The light source inputs a light into the optical waveguide. The light receiving element receives the light output from the optical waveguide.Type: ApplicationFiled: March 30, 2012Publication date: October 4, 2012Applicant: Kabushiki Kaisha ToshibaInventors: Ichiro Tono, Shingo Kasai, Takaaki Wada, Isao Nawata, Masaaki Hirakawa, Tomohiro Takase, Kayoko Oomiya, Takeshi Yamauchi, Tadahiro Nakayama, Isamu Nitta